—What’re the rules in class?                 —First, mobile phones can’t be ______.
#53189
A
to use
B
using
C
used
D
use
推荐题目
It __________ great to watch Harry Potter on TV tonight.
#58982
A
listens
B
hears
C
sounds
D
listens to
Can you call me when you ________ home? 
#59235
A
get back to
B
get to back
C
get back
D
get to